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Finding the Fourth Proportional to 15,179.28, 20,914.92 and 10,202.64

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Solution

The fourth proportional to 15,179.28, 20,914.92 and 10,202.64 is: 14,057.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.28 : 20,914.92 = 10,202.64 : x
  2. Step 2: Convert to fraction form
    15,179.28/20,914.92 = 10,202.64/x
  3. Step 3: Cross multiply
    15,179.28x = 20,914.92 × 10,202.64
  4. Step 4: Simplify right side
    15,179.28x = 213,387,399.39
  5. Step 5: Solve for x
    x = 213,387,399.39/15,179.28
  6. Step 6: Final answer
    x = 14,057.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.